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CN-122013257-A - Electrolytic hydrogen production scheduling management method based on oxygen supply demand and byproduct hydrogen absorption

CN122013257ACN 122013257 ACN122013257 ACN 122013257ACN-122013257-A

Abstract

The invention discloses an electrolytic hydrogen production scheduling management method based on oxygen supply demand and byproduct hydrogen absorption, which particularly relates to the technical field of electrolytic hydrogen production adjustment, and comprises the steps of obtaining target oxygen supply quantity, oxygen supply duration, current hydrogen storage quantity, hydrogen absorption rate and byproduct hydrogen generation quantity corresponding to unit oxygen production in a target oxygen supply period, solving an upper limit allowable oxygen production range in which a hydrogen storage unit can continuously accommodate newly added byproduct hydrogen in the target oxygen supply period, outputting a continuous oxygen production permission range, solving the continuous oxygen production permission range according to the oxygen supply demand, the current hydrogen storage state and the hydrogen absorption capacity in the target oxygen supply period, executing pre-absorption treatment when the target oxygen production demand exceeds the continuous oxygen production permission range, and determining an oxygen unit combination, an oxygen production execution scheme and rolling reconstruction adjustment of a subsequent residual period by combining with the updated continuous oxygen production permission range.

Inventors

  • YE MINGSHU
  • LIN CAICHENG
  • LI LING

Assignees

  • 厦门金名节能科技有限公司

Dates

Publication Date
20260512
Application Date
20260413

Claims (10)

  1. 1. An electrolytic hydrogen production scheduling management method based on oxygen supply demand and byproduct hydrogen consumption is characterized by comprising the following steps: S1, acquiring a target oxygen supply amount, an oxygen supply duration, a current hydrogen storage amount, a hydrogen absorption rate and a byproduct hydrogen generation amount corresponding to unit oxygen generation in a target oxygen supply period, solving an upper limit allowable oxygen generation range in which a hydrogen storage unit can continuously accept newly added byproduct hydrogen in the target oxygen supply period, and outputting a continuous oxygen generation allowable range; S2, comparing the target oxygen production requirement with a continuous oxygen production allowable range, and controlling a hydrogen absorption unit to execute pre-absorption treatment on stored hydrogen before the target oxygen supply period starts when the target oxygen production requirement exceeds the continuous oxygen production allowable range, and outputting an updated continuous oxygen production allowable range; s3, determining a target oxygen generation unit combination from a plurality of oxygen generation units according to the target oxygen supply amount, the oxygen supply duration and the updated continuous oxygen generation allowable range, determining the starting time sequence, the load sharing proportion and the continuous operation duration of each target oxygen generation unit, and outputting a target oxygen generation execution scheme; S4, controlling each target oxygen generation unit to execute electrolysis oxygen generation according to a target oxygen generation execution scheme, synchronously controlling the hydrogen absorption units to execute absorption on corresponding byproduct hydrogen, and outputting medical oxygen and byproduct hydrogen process states; S5, recalculating a continuous oxygen production allowable range corresponding to the residual period of the target oxygen supply period according to the process state of the medical oxygen and the byproduct hydrogen, and when the recalculated continuous oxygen production allowable range is smaller than the current residual target oxygen production requirement, recalculating the pre-digestion treatment and the target oxygen production execution scheme determination until the medical oxygen supply output is completed.
  2. 2. The electrolytic hydrogen production scheduling management method based on oxygen supply demand and byproduct hydrogen consumption of claim 1, which is characterized by comprising the following steps: The step S1 includes: S1-1, acquiring a target oxygen supply amount and oxygen supply duration, determining a target oxygen production requirement corresponding to a target oxygen supply period, converting the target oxygen production requirement into a newly-increased byproduct hydrogen requirement corresponding to the target oxygen supply period according to a byproduct hydrogen generation amount corresponding to unit oxygen production, and outputting a target byproduct hydrogen requirement result; S1-2, determining a current acceptable allowance corresponding to a hydrogen storage unit according to the current hydrogen storage amount, determining a hydrogen digestible amount in a target oxygen supply period according to a hydrogen digestion rate and an oxygen supply duration, resolving a byproduct hydrogen continuous admittance corresponding to the target oxygen supply period according to the current acceptable allowance and the hydrogen digestible amount, and outputting a continuous admittance result; S1-3, carrying out constraint matching on a target byproduct hydrogen demand result and a continuous admitting capability result, solving an upper limit allowable oxygen production range of the hydrogen storage unit which can continuously admit newly-added byproduct hydrogen in a target oxygen supply period according to the constraint matching result, and outputting a continuous oxygen production allowable range.
  3. 3. The electrolytic hydrogen production scheduling management method based on oxygen supply demand and byproduct hydrogen consumption according to claim 2, which is characterized in that: The process of outputting the continuous admission capability result in S1-2 further includes: S1-21, determining the current acceptable allowance corresponding to the hydrogen storage unit based on the current hydrogen storage amount, the upper limit of the capacity of the hydrogen storage unit and the hydrogen storage safety boundary, constructing a time period acceptance constraint set according to the accumulated occupation amount of byproduct hydrogen in a target oxygen supply time period, the violation amount of the hydrogen storage safety boundary and the oxygen supply duration coverage state, wherein the time period acceptance constraint set comprises a hydrogen storage occupation constraint, a continuous constraint and a time period coverage constraint, and outputting the current acceptable allowance result and the time period acceptance constraint set; S1-22, constructing a segmented digestion track in a target oxygen supply period according to the hydrogen digestion rate and the oxygen supply duration, executing continuity check, fluctuation consistency check and boundary arrival check on the segmented digestion rate of each period, executing segment correction according to the hydrogen storage occupation increment and the period coverage notch when check conflict exists until each corrected segment of each period meets a period admission constraint set, and outputting hydrogen digestion quantity and segment digestion check results.
  4. 4. The electrolytic hydrogen production scheduling management method based on oxygen supply demand and byproduct hydrogen consumption according to claim 3, wherein the method comprises the following steps: The process of outputting the continuous admission capability result in S1-2 further includes: S1-23, carrying out joint solution on the current allowable residual result and the hydrogen allowable quantity, and solving the byproduct hydrogen continuous admittance capacity corresponding to the target oxygen supply period according to the admittance coverage state, admittance interruption state and constraint violation quantity of newly added byproduct hydrogen in the target oxygen supply period, and calling the sectional digestion track to carry out re-correction when the admittance coverage state does not cover the target oxygen supply period or the admittance interruption state has an interruption section until a continuous admittance capacity result with no admittance interruption section and zero constraint violation quantity in the target oxygen supply period is obtained.
  5. 5. The electrolytic hydrogen production scheduling management method based on oxygen supply demand and byproduct hydrogen consumption according to claim 4, which is characterized in that: The step S2 includes: S2-1, performing corresponding relation judgment on a target oxygen production demand and a continuous oxygen production permission range, determining a demand difference that the target oxygen production demand exceeds the continuous oxygen production permission range, converting the demand difference and byproduct hydrogen generation quantity corresponding to unit oxygen production to obtain a target pre-digestion quantity required to be released before starting a target oxygen supply period, and outputting a demand difference result and a target pre-digestion quantity result; S2-2, constructing a pre-digestion execution sequence before the start of the target oxygen supply period according to the target pre-digestion amount, the starting moment of the target oxygen supply period and the corresponding digestion execution capacity of the hydrogen digestion unit, controlling the hydrogen digestion unit to execute sectional pre-digestion on stored hydrogen according to the pre-digestion execution sequence, and outputting a pre-digestion completion result and a residual hydrogen storage state result.
  6. 6. The electrolytic hydrogen production scheduling management method based on oxygen supply demand and byproduct hydrogen consumption according to claim 5, which is characterized in that: In S2, further comprising: s2-3, recalculating a continuous oxygen production allowable range corresponding to the target oxygen supply period according to the residual hydrogen storage state result, and carrying out corresponding relation judgment again on the recalculated continuous oxygen production allowable range and the target oxygen production requirement, and outputting an updated continuous oxygen production allowable range when the recalculated continuous oxygen production allowable range covers the target oxygen production requirement.
  7. 7. The electrolytic hydrogen production scheduling management method based on oxygen supply demand and byproduct hydrogen consumption of claim 6, which is characterized by comprising the following steps: the step S3 includes: S3-1, determining a time period oxygen production demand sequence corresponding to a target oxygen supply time period according to the target oxygen supply amount and the oxygen supply duration, dividing the time period oxygen production demand sequence into a permission coverage area section and a permission limited section according to the updated continuous oxygen production permission range, and outputting a section division result and oxygen production demand results corresponding to each section; S3-2, based on the section division result, the oxygen production capacity of each oxygen production unit corresponding to the unit time period, the unit oxygen production byproduct hydrogen generation amount and the continuous operation state, performing combination solution on the plurality of oxygen production units, determining target oxygen production unit combinations which meet the oxygen production requirements of each section and the byproduct hydrogen generation amount of each section is not beyond the updated continuous oxygen production allowable range, and outputting target oxygen production unit combination results and section bearing results corresponding to each target oxygen production unit.
  8. 8. The electrolytic hydrogen production scheduling management method based on oxygen supply demand and byproduct hydrogen consumption of claim 7, which is characterized by comprising the following steps: in S3, further comprising: S3-3, according to the combination result of the target oxygen generating units and the section bearing result, performing time sequence arrangement and load distribution on each target oxygen generating unit according to the section connection relation, determining the starting time, the load sharing proportion and the continuous operation duration of each target oxygen generating unit, and keeping the section oxygen generating output and the section byproduct hydrogen generation amount simultaneously falling into the allowable range of the corresponding section when the adjacent sections are connected, and outputting a target oxygen generating execution scheme.
  9. 9. The electrolytic hydrogen production scheduling management method based on oxygen supply demand and byproduct hydrogen consumption of claim 8, which is characterized by comprising the following steps: in S4, it includes: S4-1, controlling each target oxygen generating unit to execute electrolysis oxygen generation according to corresponding starting time, load sharing proportion and continuous operation time according to a target oxygen generating execution scheme, synchronously reading real-time oxygen generating amount, real-time byproduct hydrogen generating amount and real-time hydrogen consumption amount corresponding to each target oxygen generating unit, and outputting oxygen generating execution state and byproduct hydrogen balance state corresponding to the current time period according to corresponding verification and accumulated balance calculation of the real-time byproduct hydrogen generating amount and real-time hydrogen consumption amount execution time period; S4-2, determining a medical oxygen process state and a byproduct hydrogen process state corresponding to the current period according to the oxygen production execution state and the byproduct hydrogen balance state, and writing the unconsumed occupation increment into a hydrogen storage unit state updating result when the byproduct hydrogen balance state represents the unconsumed occupation increment between the byproduct hydrogen accumulation generation amount and the accumulation consumption amount in the current period, and outputting the medical oxygen and the byproduct hydrogen process state corresponding to the target oxygen supply period.
  10. 10. The electrolytic hydrogen production scheduling management method based on oxygen supply demand and byproduct hydrogen consumption of claim 9, which is characterized by comprising the following steps: In S5, it includes: s5-1, determining the completed oxygen supply amount, the executed oxygen production amount, the current hydrogen storage state and the executed hydrogen consumption amount corresponding to a target oxygen supply period based on a medical oxygen process state and a byproduct hydrogen process state, solving the residual target oxygen production requirement and residual byproduct hydrogen admittance corresponding to a residual period according to the total oxygen supply requirement and the total duration of the target oxygen supply period, and outputting a residual requirement result and a residual continuous oxygen production admittance range; S5-2, performing corresponding relation judgment on the residual target oxygen production requirement and the residual continuous oxygen production allowable range, and when the residual target oxygen production requirement exceeds the residual continuous oxygen production allowable range, re-determining a pre-digestion amount corresponding to a residual period and an oxygen production unit recombination result according to a corresponding difference result, and outputting a pre-digestion adjustment instruction and an oxygen production execution adjustment instruction corresponding to the residual period; s5-3, controlling the hydrogen digestion unit to execute pre-digestion processing corresponding to the residual period according to the pre-digestion adjustment instruction, and re-determining a target oxygen generation execution scheme corresponding to the residual period according to the oxygen generation execution adjustment instruction until the residual continuous oxygen generation permission range covers the residual target oxygen generation requirement, and outputting an iteration adjustment result corresponding to the medical oxygen supply output.

Description

Electrolytic hydrogen production scheduling management method based on oxygen supply demand and byproduct hydrogen absorption Technical Field The invention relates to the technical field of electrolytic hydrogen production regulation, in particular to an electrolytic hydrogen production scheduling management method based on oxygen supply requirements and byproduct hydrogen absorption. Background In the medical oxygen supply technology based on electrolytic hydrogen production and oxygen production, the main current practice in the industry mainly solves the problem of how to continuously meet the oxygen demand of hospitals under the renewable energy fluctuation condition, generally, photovoltaic power generation is used as an electrolytic power supply source, the running power of an electrolysis device is adjusted in a lifting manner according to the current or predicted oxygen consumption of the hospitals, and oxygen supply gaps are compensated by combining the mode of oxygen storage, hydrogen storage or hydrogen fuel cell back power supply; For example, in a hospital scene provided with a photovoltaic power generation device, an electrolysis device, a hydrogen storage unit and a medical oxygen supply pipe network, the rapid fluctuation of photovoltaic power caused by cloud cluster shielding exists in the daytime, short-time high-strength oxygen demand such as concentrated starting of a breathing machine and increase of surgical oxygen exists at night or during emergency rescue, and meanwhile, medical oxygen supply is also subjected to the hard constraint that the oxygen purity is stable, the oxygen supply is continuous and uninterrupted, and the electrolysis device is not suitable for frequent and large lifting and starting and stopping; Under the constraint, the main stream practice can stably expose an observable and verifiable defect, namely, although the system can continuously follow the oxygen fluctuation of a hospital in the power regulation level, the electrolysis device can repeatedly enter an operation interval which is unfavorable for medical oxygen supply in the process of frequently tracking the load, and further, the phenomena of increased oxygen production purity fluctuation, poor gas separation stability, unstable oxygen supply connection in a switching stage and accelerated reduction of the service life of the device occur, and the root cause is that the electrolysis device is regarded as common gas production equipment which can freely follow as required in the prior art, the electrolysis load is adjusted only by taking an oxygen demand gap as a basis, and the allowable operation migration mode of the electrolysis device under the condition of meeting medical oxygen supply is not restrained; The application aims to solve the technical problem of how to prevent an electrolysis device from entering an operation interval which is unfavorable for medical oxygen supply due to unconstrained tracking load under the condition of coexistence of oxygen fluctuation and power supply fluctuation of a hospital, thereby realizing stable and continuous output of medical oxygen. Disclosure of Invention In order to overcome the above-mentioned drawbacks of the prior art, an embodiment of the present invention provides an electrolytic hydrogen production scheduling management method based on oxygen supply demand and byproduct hydrogen consumption, which solves the problems set forth in the background art by first solving a continuous oxygen production allowable range according to oxygen supply demand, current hydrogen storage state and hydrogen consumption capability of a target oxygen supply period, then executing pre-consumption processing when the target oxygen production demand exceeds the continuous oxygen production allowable range, and determining an oxygen production unit combination, an oxygen production execution scheme and rolling reconstruction adjustment of a subsequent residual period in combination with the updated continuous oxygen production allowable range. In order to achieve the purpose, the invention provides the following technical scheme that the electrolytic hydrogen production scheduling management method based on oxygen supply demand and byproduct hydrogen consumption comprises the following steps: S1, acquiring a target oxygen supply amount, an oxygen supply duration, a current hydrogen storage amount, a hydrogen absorption rate and a byproduct hydrogen generation amount corresponding to unit oxygen generation in a target oxygen supply period, solving an upper limit allowable oxygen generation range in which a hydrogen storage unit can continuously accept newly added byproduct hydrogen in the target oxygen supply period, and outputting a continuous oxygen generation allowable range; S2, comparing the target oxygen production requirement with a continuous oxygen production allowable range, and controlling a hydrogen absorption unit to execute pre-absorption treatment on stored hyd